Please help its my last question

If 5x - 2 = -12, then x = a) -50 b) -4.4 c) -2.8 d) -2

Let y = and z = . translate "z less than y" into an algebraic expression, and solve it.

20 sharpened pencils are placed in a box containing an unknown number of unsharpened pencils suppose 15 pencils are removed at random and five of the remove pencils are sharpened based on this is it reasonable to assume that the number of unsharpened pencil is 40 explain your reasoning